Re: advice to low cost hardware raid (with mdadm)

On Wed, Sep 15, 2010 at 05:25:02PM -0500, Stan Hoeppner wrote:

Keld Jørn Simonsen put forth on 9/15/2010 4:40 PM:

quoted

These ports are connected to the
south bridge often with 20 Tbit/s or more, while a controller on an
32 bit PCI only delivers 1 TBit. 

Tbit/s for 32/33 PCI?  I think you're a little high.. by a factor of
1000, Keld. :)

yes, you are right. I meant Gbit/s

Why, may I ask, are you quoting serial data rates for parallel buses?
I've only seen inter-chip bandwidth quoted in serial rates on
communications gear.  Everyone else quotes parallel data rates for board
level communication paths-- Bytes/s not bits/sec.  You must work for
Ericsson. ;)

because I have seen specs given in bit/s. Eg southbridge speeds, and 
speeds of PCIe (2,5 Gbit/s per lane).  I agree that people probably want
speeds in MB/s.

Regardless of bit rate values, we agree on the important part, for the
most part. :)

I think so, too.

keld
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